ABSTRACT
Consider two thin lenses with a real and distant object with a combined effective focal length of F. Let F a be the focal length of the a lens (facing the long conjugate) with a V value of V a, and likewise for the b lens. Then (Kingslake 1978:80), F a = ( V a − V b ) F V a and F b = ( V b − V a ) F V b . https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315222295/bd2ad0d9-a48e-40ac-8986-c51474069cbd/content/eq62.tif"/>
